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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 537 · 40 questions
TalentJR

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

NameDateTime takenScore ___ / 40
  1. 1.You start your homework at 6:30 and finish at 7:25. How many minutes did you work?
  2. 2.25 × 8 =
  3. 3.66 + ? = 100
  4. 4.67 − 16 =
  5. 5.40 × 4 =
  6. 6.78 − 37 =
  7. 7.32 + ? = 100
  8. 8.280 ÷ 5 =
  9. 9.17 + 19 =
  10. 10.64 × 4 =
  11. 11.72 ÷ 3 =
  12. 12.6 + ? = 10
  13. 13.47 − 29 =
  14. 14.76 − 61 =
  15. 15.1012 − 990 =
  16. 16.89 × 7 =
  17. 17.17² =
  18. 18.Half of 66 =
  19. 19.486 + 99 =
  20. 20.13 + 15 =
  21. 21.Best estimate of 34 × 56? (a) 18000 (b) 1800 (c) 180
  22. 22.1001 − 992 =
  23. 23.5% of ₹740 =
  24. 24.168 ÷ 4 =
  25. 25.You buy a bag of mangoes for ₹22 and pay with a ₹100 note. How much change do you get, in rupees?
  26. 26.A train leaves at 3:00 and reaches the next city at 4:05. How many minutes is the journey?
  27. 27.77 + 5 =
  28. 28.5% of ₹390 =
  29. 29.16² =
  30. 30.62 + ? = 100
  31. 31.28 + 5 =
  32. 32.13 + 12 =
  33. 33.Double 23 =
  34. 34.156 ÷ 4 =
  35. 35.50 − 29 =
  36. 36.48 ÷ 4 =
  37. 37.55 + 7 =
  38. 38.89 + 32 =
  39. 39.140 ÷ 4 =
  40. 40.46 + 8 =

Answer key

  1. 55
  2. 200
  3. 34
  4. 51
  5. 160
  6. 41
  7. 68
  8. 56
  9. 36
  10. 256
  11. 24
  12. 4
  13. 18
  14. 15
  15. 22
  16. 623
  17. 289
  18. 33
  19. 585
  20. 28
  21. 1800
  22. 9
  23. 37
  24. 42
  25. 78
  26. 65
  27. 82
  28. 19.5
  29. 256
  30. 38
  31. 33
  32. 25
  33. 46
  34. 39
  35. 21
  36. 12
  37. 62
  38. 121
  39. 35
  40. 54

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